Lantern



Nav. 25, 1941.

B. W. TULLls 2,263,659

LANTERN Filed Jan. l2, 1940 '2 Sheets-Sheet l WM. "k W Ill IllllllINVENTOR 505/5/ W 72H/fs.

ATTORNEY Patented Nov. 25, 1.9341l LANTERN Boyd W. Tullis, Wichita,Kans., assignor to The Coleman Lamp and Stove Company, Wichita, Kans., acorporation of Kansas Application January 12, 1940, Serial No. 313,561

Claims.

This invention relates to lanterns, particularly those designed forburning liquid hydrocarbons such as kerosene and which require agenerator for supplying fuel vapor to a Bunsen.

The principal object of the invention is to provide a lanternconstruction of this character which is simple and inexpensive tomanufacture, and wherein the parts are quickly and accurately assembled.

Other objects of the invention are to provide a lantern of thischaracter with an improved suspension and distribution of the weight ofthe fount from the bail; to provide a lantern construction wherein theinterior parts are readily accessible and the globe is adapted for readyremoval; to provide a lantern which is not ailected by gusts of wind oris likely to clog by insects; to provide an ample airsupply regardlessof wind direction relatively to the air inlet of the Bunsell and ltoprovide the lantern with a composite bar through which air is suppliedto the Bunsen and which forms an attachment for the bail as Well assupport for the Bunsen and burner tubes.

In accomplishing these and other objects of the invention, ashereinafter pointed out, I have provided improved details of structure,the preierred form of which is illustrated in the accompanying drawings,wherein:

Fig. 1 is a side elevational view of a lantern constructed in accordancewith the present invention.

Fig. 2 is a vertical section through the lantern particularly showingadaptability of the parts to ready and accurate assembly.

Fig. 3 is a detail perspective view of the fount, spacing collar, andthe mounting plate shown in disassembled spaced relation.

Fig. 4 is a perspective view of the lantern globe, top assembly andventilation top shown in disassembled spaced relation.

Fig. 5 is a detail perspective view of the parts of the carrying barshown in disassembled spaced relation.

Referring more in detail to the drawings:

l designates a lantern constructed in accordance with the presentinvention `and which includes a fount 2 having a rim-like base 3, and acylindrical Wall 4 terminating in a dome-shaped top 5. The center of thetop has a preferably tapered opening 6 threaded to receive the threadsof a tapered nipple 1 of a fuel control valve 8. The valve 8 has atransversely arranged body 9 provided With an outlet connection I0connected by a flexible tube Il with a generator base member l2, Thevalve also includes a tube I3 depending within the fount and having aninlet located adjacent the bottom thereof., Elow lrem the yfount throughthe valve ismanually adjusted by a, hand=w-hee1 I4 carried on a ,stem l50i the valve. The tapered threaded connection 0f the valve body providesa leak-tight joint without the use of gaskets, but the diinculty is thatthe extent of takeup of the threads is variable and therefore must betaken care of in makeup of the lantern parts, later described.

Also formed in the dome-shaped top of the fomit, and odset laterally ofthe fuel cgntrol valve,` is a threaded opening 'I6 threadedly mounting agenerator preheat-ing device I8 which is preferably oi the typeillustrated in my application for United States Letters Patent onAtomi-2er. led January l2, 1940, Serial No. 313,562. l

Briey, the preheater included a valve i8 controlled by a handewheel -I9to regulate discharge of an atomized mixture into the burner tube 2l)which is directed toward a Ygenerator tube 2| that is carried on themember I2. The oullt also carries an air pump i2 by lwhich air isdischarged through a tube 23 into the vapor space 24 at the top of thefount V.for displacing fuel through the tube -|3 and to supply fuel andair to the preheater as later described,

The fount also includes a lill opening 25 through which fuel is insertedinto the .fount and which is normally closed by a cap 26. The top of theleunt is shaped te ferm an annular shoulder 121 to center a spacingcollar 26 thereon. The collar -28 has air inlet openings 29, Openings30, `3i and 32 for respectively passing the actuating stems oi thevalves 8 and I8, and av generating vtip cleaning lever 33 that iscarried by the part l2. The lever 33 is rotatably mounted in a lateAeral extension-34 of the part I2 and passes through a packing nut 35 toprevent leakage of fuel and air therearound.

Seated upon :the upper edge of the spacing collar 28 is a 4base plate 36having a central, circular, depressed portion 4lll engaged within thecollar to maintain the base plate in axial alignment with the iount. Theplate is attached to `the fountby fastening devices such as screws 38having their Shanks 3S extending through openings 4U in the plate andinto threaded sockf ets 4| carried by the top of the fount (Figs. 2 .and3). The base plate 136 has diametrically opposed arm portions 42 and 43provided with rod ichoring collars 44 and 55. The collars 44 and bestshown in Fig. 2 and have vertical bores are secured in openings 46 ofthe plate ask 41 and 48 extending therethrough. The base plate also hasan opening 49 to pass the tube of the preheater and an opening 58 topass the threaded neck 5| which projects from the shouldered upper end52 of the generator supporting member |2.

The member I2 is rigidly secured to the plate by a nut 53 threaded ontothe neck 5| to draw the shoulder 52 against the bottom of the plate,thereby forming a xed support of the generator tube 2| independently ofthe Valve 8. Any variation in takeup between the valve and the part I2is compensated for by the flexible connection In order to stiften theplate and provide a retaining seat 54 for the lantern globe 55, the baseplate is provided with an upwardly directed flange 56, which alsopreferably extends about the collars 44 and 45 as best shown in Fig, 3.

'Ihe lower end of the generator tube 2| has a flaring flange 51 engagingthe bevelled end 58 of the threaded neck 5| `and which is sealinglyretained thereon by a nut union 59. The upper end of the tube has aslightly enlarged portion 68 connected at its upper and lower ends withthe ends oi a generating loop 6| extending about the burner tip ormantle support, later described. The portion 68 terminates in a shoulder62 encircling a neck 63 carrying a removable orice tip 64 discharginginto a mixing chamber or Bunsen tube 65.

The mixing chamber 65 is carried by a crossbar 66 extendingdiametrically through rectangular openings 61 and 68 in a ring 69. Thering 69 has-an outwardly flaring skirt portion 10 arranged to engage theupper edge of the globe and retain the `globe on its seat. The ring 69has an annularly shouldered belt 1| substantially registering with theupper face of the cross-bar to seat the ventilator top 12 laterdescribed. The bar 66 is formed of sheet metal and includes upper andlowerparts 13 and 14. The lower part 14 includes an elongated,rectangular bottom 15 having upwardly-turned sides 16-11 and ends 18-19,the ends thereof being cut to form slots 88 at the corners. The ends 18and 19 are provided with perforations 8| and 82 for the admission ofcombustion supporting air to the Bunsen.

The bottom 15 has a collar 83 to pass the neck 63 and Seaton theshoulder 62. The central -portion of the bottom also has an opening 84which, when the parts are assembled, is located inthe vertical axis ofthe lantern. The upper member 13 includes a top 85 having dependingsidewalls 86 and 81 arranged to telescope between the sides 16 and 11 ofthe bottom member with the ends thereof passing through the `slots 88..The ends of the upper member terminateV in downwardly and outwardlyinclined ears 88 and 89 forming canopies for the protection of the airinlets and attachments for the lantern bail 98.

The `bail 98 has laterally bent ends 9| and 92 that extend throughopenings 93 and 94 in the ears 88 and 89 and are retained therein bycotter pins 95 and 96 which extend through suitable openings 91 intheendsof the bail. The top 85 has openings 98 and 99 registeringrespectively with the openings 83 and 84. Fixed over the opening 98 isthe Bunsen tube or mixing chamber 65. Connected with the upper end ofthe tube is a return bend |88 connected with the swedged upper end of atube |8|. The tube |8| has a threaded portion extended through theopenings. 98 and. 84 and isY rigidly anchored therein by nuts |02 and|83 respectively engaging the top and bottom portions of the bar. Thetube |8| depends through the generating loop 6| and carries a burnerhead |84 for mounting a mantle as in conventional practice.

The top assembly thus described is removably connected with the baseplate by rods |86 and |81. The rods have shouldered upper ends |88 and|89 forming pilots ||8 and projecting into the interior of the assembledbar, through openings ||2 and ||3 so that the shoulders are drawnrigidly against the bottom of the bar by cap-screws ||4 extendingthrough openings ||5 in the top and into threaded sockets ||6 in theends of the pilots. The lower ends of the rods |86 and |81 have taperedshoulders ||1 and ||8 engaging tapered seats ||9 in the anchoringcollars 44 and 45, which cooperate with the shoulders at the upper endsof the rods to accurately space the bar from the base plate, therebymaintaining the orice tip 64 of the generator tube in definite locationrelatively to entrance of the mixing chamber or Bunsen 65. The lowerends of the rods are also provided with reduced threaded stems |28 and|2| that extend loosely through the bores in the collars and mount nuts|22 and |23 provided with shrouds |24 and |25 rotatable within the lowerends of the bores of the collars and having shoulders |26 engagingcounterbores |21 of the anchoring collars. With this arrangement therods are rigidly and quickly removed for cleaning the globe and givingaccess to the burner tube generator and associated parts,

The ventilator top includes a cap portion |28 of suitable inner diameterto sleeve snugly over the shouldered portion of the ring 69 and whichterminates in an outwardly and downwardly flaring eave portion |29. Thetop of the cap terminates in a reduced cylindrical crown portion |38having Ventilating openings 3| cooperating with vent openings |32 in thebase plate 36 for the circulation of air and the removal of excess heatgenerated at the mantle. The top of the cylindrical crown is closed by adome-shaped portion |33, having a downwardly curved annular eave |34extending in protecting position over the vent openings |3|.

The cap thus described is anchored rigidly to the lantern structure by astud |35 iixed to the return bend |88 and having a reduced threadedupper end |36 which projects through an opening |31 of the cap |28. Theunder side of the crown portion of the cap engages a shoulder |38 and isrigidly clamped thereagainst by a retaining nut |39.

The lantern constructed as described is assemled as follows:

The tapered threaded nipple 1 of the valve 8 is drawn up tight in thetapered threaded opening 6 of the fount 2, no attention being paid tothe variable makeup between the valve and the fount, the importantoperation being that the valve is drawn up tight so as to avoid anyleakage about the connection. The generator base member l2, includingthe tip cleaning mechanism, is connected with the valve by the flexibletube The preheater |1 is then screwed into position on the fount and thespacing collar 28 is applied so that the lower end engages about theshoulder 21. The base plate 36 is then applied on the upper edge of thecollar 28 and centered thereon with the depressed portion 31 fittingwithin the collar as shown in Fig. 3. The shoulder 52 of the generatorbase member I2 is drawn tightly against the base plate by application ofthe nut 53 so that the bevelled end 58 is xedlylspaced with respect tothe base plate 36. The generator tube 2| is thenapplied by screwing theunion 59 on the threaded neck of the generator base member I2. Theorifice tip 64 is then a definite distance above the base plate. Theassembled cross-bar EB, carrying the Bunsen and burner tubes 65 andI|I|, is inserted through the openings Bland 68 in the ring 69. This ,isreadily effected by rst placing the end .of the bar having the ear 88through the opening 6,1 until the other ear 89 passes into the ring andregisters with the opening 68. The bar `65 may then be slid retractivelythrough the openings so that it centers within the ring 59. The pilotends II and ||I of the rods Ille and IIJ'I are then inserted through theopenings |I2 and I|3 of the cross-bar and the shoulders |98 and |09 ofthe rods are drawn tightly thereagainst upon application of thecapscrews II 4. The ventilator top is then applied over the ring 69 andanchored to the top assembly upon application of the nut |39, the headsof the cap-screws I4 passing through suitable openings Mil in theventilator cap as shown in Fig. 2. After application of the mantle |05,followed by the globe 55, the top assembly is applied over the globe sothat the reduced threaded stems and |2| of the rods pass through thebores 4'I and 48 of the anchoring collars 44 and 45 with the taperedshoulders ||1 and |I8 thereof engaging the seats |I9 of the collars,the-reby accurately spacing the inlet of the Bunsen tube with respect tothe orice tip 64 of the generator. The shroud nuts |24 and |25 are thenapplied to the` threaded stems |20 and |2| of the rods so that theshrouds thereof enter the bores 41 and 48 as the nuts are tightened tosecurely anchor the rods including the entire top assembly on the baseplate.

It is thus obvious that all the parts are spaced relatively to the baseplate so that variable makeup of the threads for the valve 8 does notaffect predetermined spacing of the generator tip 64 with respect to theinlet of the Bunsen tube. It is also obvious that all the parts arelined up relatively to the plate and that the weight of the lantern iscarried by the plate when it is carried by the bail.

Most of the parts of the lantern are constructed so that they may beformed with dies thereby providing an inexpensive construction and yetprovide a very effective and rigid structure when the parts areassembled.

Aft-er lling the fount with fuel, for example kerosene, the pump 22 isactuated to build up pressure on the liquid in the fount. Upon openingthe valve I8 of the preheater I'I, an atomized mixture of air and liquidfuel is discharged through the tube 2D, which, when lighted, burns withan intensely hot flame directed against the generator tube 2|. After thegenerator tube has been suiiiciently heated to cause vaporization of thefuel passed therethrough the hand-wheel I4 is actuated to open the Valve8, whereupon fuel is displaced from the fount 2 through the tube I3,into the generator tube 2|, where the fuel is vaporized and the vapordischarged through the orice tip 64, into the Bunsen tube, so that thevapor discharged into the mantle |55 is ignited by the flame of thepreheater. When the fuel is vaporized to give the required brightness ofthe mantle HB5, the preheater valve I 8 is closed. The lantern continuesto operate, primary air being drawn through the perforations 8| and 82in the ends of the cross-bar 66, for discharge with the fuel from thejet into the Bunsen tube. During of the lantern is ventilated throughthe openings in the base plate |32, and the slot-likey openings ISI inthe ventilator top. The ears 88 and 89 at the `ends of the cross-barBIS, which form attachment for the bail, provide -shields so that gustsof wind do not interfere with operation of the lantern. The perforations8| and 82 not only form screens for the exclusion of bugs, but theybreak up the air currents passing to the Bunsen. By providing air inletopenings at both ends of the bar, at least one of the ends is alwayseffective in supplying adequate air `regardless of the direction whichthe wind blows.

From the foregoing itis obvious that I have provided a relativelyinexpensive and rigid lantern construction which is readily assembledwith accuracy so` that the fuel mixture effected in the Bunsen isconstantly uniform. The construction of the rods and their attachment tothe base plate also provide quick and easy removal of the top assemblyfor giving access to the globe and interior parts of the lantern.

What I claim and desire to secure by Letters Patent is:

1. In a lantern, a top assembly including, a ring member having openingsin opposite diametrical sides thereof, a hollow cross-bar extendingthrough said openings and provided with air inlets at the ends thereof,interconnected Bunsen and burner tubes carried by the cross-bar, saidBunsen tube having connection with said air inlets by way of the hollowcross bar for supplying combustion supporting air to the burner tube, aventilator top on said ring member, means anchoring the ventilator topin xed position relatively to the cross-bar, and lantern carrying meansxed to said cross bar independently of the ring member 4and saidventilator top.

2. In a lantern, a top assembly including, a ring member having openingsin opposite diametrical sides thereof, a hollow cross-bar extendingthrough said openings and provided with air inlets at the ends thereof,interconnected Bunsen and burner tubes carried by the cross-bar, saidBunsen tube having connection with said air inlets by way of the hollowcross bar for supplying combustion supporting air to the burner tube, aventilator top on said ring member, means anchoring the ventilator topin fixed position relatively to the cross-bar, canopy-like earsextending in protective relation over the air inlets, and a bailconnected with said ears.

3. In a lantern, a top assembly including, a cross member includingupper and lower channel-like parts having intertting sides to form anair duct therethrough, perforated ends on one of opera-tion, theinterior Vsaid channel-like parts for closing said duct at the endsthereof and forming screen-like guards through which air is admitted tothe duct, and canopy-like ears on the ends of one of the channel-likeparts and projecting over the perforated ends to prevent external draftsfrom interfering with ow of air through said perforated ends into theducts, said ears forming attachments for a bail of the lantern.

4. In a lantern, a fount, a base member fixed upon the fount, a ringmember having openings in opposite diametrical sides thereof, a hollowcross bar having ends projecting outwardly from said openings andprovided with air inlets, a burner unit carried by the cross bar andhaving connection through said hollow cross bar with the air inlets,canopy-like ears on the ends of the cross bar and extending over the airinlets, and a bail connected with said ears whereby the entire weight ofsaid lantern is carried by the bail through the cross bar.

5. A lantern including, a fount, a base plate having fixed support onthe fount, anchoring collars on the base plate provided with throughbores, a top assembly including a ring member having openings inopposite diametrical sides thereof, a hollow cross bar having endsprojecting outwardly from said openings and provided with air inlets, aburner unit carried by the cross bar and having connection through saidcross bar with the air inlets, a generator fixed to the base plate andhaving a tip extending through said cross bar and discharging into theburner unit, rods having fixed connection with the projecting ends ofthe cross bar and shouldered lower ends seating against the anchoringcollars, threaded terminals of the ends of the rods extending looselythrough said bores of the anchoring collars, nuts on the threadedterminals and having shrouds rotatably engaged in said bores to centerthe rods with respect to the anchoring collar to secure said topassembly to the base plate and maintain a denitely fixed relationship ofthe orifice tip to the burner unit, and means for attaching a -bail tothe ends of the hollow cross bar whereby the entire weight of thelantern is transmitted through the cross bar to said bail.

BOYD W. 'IUILIS

